Photodissociation of Gaseous Ions Formed by Laser Desorption.
Abstract
Both pulsed and gated continuous wave carbon dioxide lasers have been employed to desorb ions and then to photodissociate them in a Fourier transform ion cyclotron resonance mass spectrometer. Pulsed CO2 laser irradation was most successful in laser desorption experiments, while a gated continuous wave laser was used for a majority of the successful infrared multiphoton dissociation studies. Fragmentation of ions with m/z values in the range 400-1300 was induced by infrared multiphoton dissocation. Such photodissociation was successfully coupled with laser desorption for a number of different classes of compounds. Either two sequential pulses from a pulsed carbon dioxide laser (one for desorption and one for dissociation) or one desorption pulse followed by gated continuous wave irradation to bring about dissociation were ultilized. Keywords: Carbon Dioxide Lasers; Fourier Transform; Ion Cyclotron Resonance; Mass Spectrometry; Infrared Multiphoton Dissociation; Laser Desorption.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 20, 1986
- Accession Number
- ADA172621
Entities
People
- Clifford H. Watson
- Gokhan Baykut
- John R. Eyler
Organizations
- University of Florida